Home / 138,632.01-191,303.27-79,012.17

Finding the Fourth Proportional to 138,632.01, 191,303.27 and 79,012.17

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Solution

The fourth proportional to 138,632.01, 191,303.27 and 79,012.17 is: 109,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,632.01 : 191,303.27 = 79,012.17 : x
  2. Step 2: Convert to fraction form
    138,632.01/191,303.27 = 79,012.17/x
  3. Step 3: Cross multiply
    138,632.01x = 191,303.27 × 79,012.17
  4. Step 4: Simplify right side
    138,632.01x = 15,115,286,095.74
  5. Step 5: Solve for x
    x = 15,115,286,095.74/138,632.01
  6. Step 6: Final answer
    x = 109,031.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.